DOI: 10.1016/j.quascirev.2018.03.027
Scopus记录号: 2-s2.0-85044121758
论文题名: Contrasting responses to long-term climate change of carbon flows to benthic consumers in two different sized lakes in the Baltic area.
作者: Belle S. ; Freiberg R. ; Poska A. ; Agasild H. ; Alliksaar T. ; Tõnno I.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2018
卷: 187 起始页码: 168
结束页码: 176
语种: 英语
英文关键词: Benthic food web
; Carbon stable isotope
; Climate change
; Large lake
; Subfossil chironomid
Scopus关键词: Aquatic ecosystems
; Carbon
; Isotopes
; Lakes
; Phytoplankton
; Carbon stable isotopes
; Food webs
; Large lakes
; Organic matter dynamics
; Phytoplankton community
; Stable isotopic compositions
; Subfossil chironomid
; Temperature fluctuation
; Climate change
; benthos
; biomass
; carbon isotope
; climate change
; climate effect
; community composition
; food web
; Holocene
; invertebrate
; lacustrine deposit
; long-term change
; morphometry
; paleoclimate
; paleotemperature
; phytoplankton
; reconstruction
; stable isotope
; subfossil
; Baltic Region
; Estonia
; Chironomidae
英文摘要: The study of lake sediments and archived biological remains is a promising approach to better understand the impacts of climate change on aquatic ecosystems. Small lakes have been shown to be strongly sensitive to past climate change, but similar information is lacking for large lakes. By identifying responses to climate change of carbon flows through benthic food web in two different sized lakes, we aimed to understand how lake morphometry can mediate the effects of climate change. We reconstructed the dynamics of phytoplankton community composition and carbon resources sustaining chironomid biomass during the Holocene from the combined analysis of sedimentary pigment quantification and carbon stable isotopic composition of subfossil chironomid head capsules (δ13CHC) in a large lake in the Baltic area (Estonia). Our results showed that chironomid biomass in the large lake was mainly sustained by phytoplankton, with no significant relationship between δ13CHC values and temperature fluctuations. We suggest that lake morphometry (including distance of the sampling zone to the shoreline, and lake volume for primary producers) mediates the effects of climate change, making large lakes less sensitive to climate change. Complementary studies are needed to better understand differences in organic matter dynamics in different sized lakes and to characterize the response of the aquatic carbon cycle to past climate change. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112225
Appears in Collections: 气候减缓与适应
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作者单位: Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences, Uppsala, Sweden; Centre for Limnology, Institute of Agricultural and Environmental Sciences, Estonian University of Life Sciences, Tartumaa, Estonia; Institute of Geology, Tallinn University of Technology, Tallinn, Estonia
Recommended Citation:
Belle S.,Freiberg R.,Poska A.,et al. Contrasting responses to long-term climate change of carbon flows to benthic consumers in two different sized lakes in the Baltic area.[J]. Quaternary Science Reviews,2018-01-01,187